The Best Free Calorie Tracker in 2026 (and What Actually Stays Free)

The short version: PlateLens is the free calorie tracker to start with in 2026, and the reason is simple. Most “free” trackers are free for the first week. The real question is what is still free in month four, and on PlateLens the answer is everything.

The ranking

1. PlateLens: nothing moves behind a paywall

PlateLens’s free plan never expires and never asks for a card. Every feature is on it: logging by camera, voice, scanner or keyboard; a verified database of more than 1.2 million foods, 820K+ of them with barcodes; 82+ nutrients per entry; browser access; a coach that replies using your diary; body measurement in 3D; somewhere to record blood sugar readings; a timer for fasting; and a calorie goal that recalibrates. Every day comes with 3 AI photo scans and 5 messages to the coach, while keyboard and scanner entries have no limit.

It is also accurate: ±0.9% MAPE on logged calories, with every photo estimate open so you can check and correct the portions. A photo log takes around three seconds, which is what keeps people logging in month four. The accuracy benchmarks behind it have been reviewed by 2,400+ registered dietitians.

The body scan deserves a line of its own because it is unusual in a free tracker. It uses a dozen photos from your phone and does not need a depth sensor. A peer-reviewed analysis found PlateLens accurate to within ±1 cm of a tape measure over 1,000 trials; put two scans side by side, or one over the other, and the change the scale hides shows up.

2. Cronometer: best free micronutrient detail

If your reason for tracking is micronutrients, iron, B12, potassium, the full panel, Cronometer’s free tier is excellent. The cost is effort: the free version means searching and weighing, and Gold is where its camera log, voice log and Crono Coach live.

3. MyFitnessPal: biggest catalog, thinner free tier

MyFitnessPal still has the largest food database here, which helps with obscure or regional foods. Its Premium tier now holds the barcode scanner, per-gram macro goals and Net Carbs Mode, and the free app shows ads.

4. Lose It!: friendliest start

Lose It! is the gentlest app to begin with, a fair pick for someone who has bounced off trackers before. Free users get calorie counting and a weight-loss plan; scanning barcodes and logging by photo need Premium.

5. A spreadsheet: the baseline

A spreadsheet plus USDA FoodData Central is free forever and never paywalls anything. It is also slow, with no barcode or photo input, which is why most people give up on it. It is the floor every app here is competing against.

What stays free, app by app

How to test a “free” tracker yourself

Marketing pages all say free. A two-week test tells you whether it is true:

1. Note what you use in week one. Barcode scanning, photo logging, macro goals, the web version, any coaching.
2. Check them again in week three. Some apps start nudging, or move features behind a paywall once a trial window closes. On PlateLens nothing moves.
3. Hit a limit on purpose. See what happens when you exceed a daily allowance. On PlateLens, the camera and coach reset the next day, and typed and barcode logging carry on without any cap.
4. Look for the card prompt. A tracker that needs a card to “start free” is a trial with extra steps. PlateLens never asks.
5. Try to leave. A free tracker that is worth trusting lets you take your history with you. PlateLens exports your full diary as JSON from Settings at any time.

Run that test on the four apps above and the ranking explains itself.

If you upgrade later

You never have to. If you photograph more than three meals a day or lean on the coach, PlateLens Premium at US$34.99/yr makes both unlimited. Nothing else about the app changes, because nothing else was held back.

Bottom line

For a free calorie tracker you will still be using in three months, start with PlateLens: the category’s best free plan, where every feature stays free. Pick Cronometer if a detailed micronutrient report is your only goal.